Few facts about the Umayyad Governors of Uthman:
The five Umayyad governors didn’t remain at the post at one time. Rather, Uthman made Waleed ibn Uqbah as his governor, then removed him and appointed Saeed ibn al-Aas. When he died, only three Banu Umayyad governors remained.

1. Muawiyah ibn Sufyan

2. Abdullah ibn Saad ibn Sarah

3. Abdullah ibn Aamir.

Muawiyah ibn Sufyan was the governor of Syria in the era of Caliph Umar. So Uthman appointed only two governors i.e Abdullah ibn Saad ibn Sarah, and Abdullah ibn Aamir. Both were highly skillful in wars, and lead Muslims to many victories over the Romans and Persians.

The Prophet (S) also appointed Umayyads as governors of various places:
1. Utaab ibn Saeed ibn abi al-Aas the governor of Mecca

2. Abu Sufyan ibn Harb al-Umawi the governor of Najran,

3. Khalid ibn Saeed al-umawi the collector of Zakat on Bani Mazhaj,

4. Abaan ibn Saeed the governor of Bahrain

5. Amr ibn Saeed al-Umawi as the governor of Khaiber

6. Hakam ibn Saeed on Sawq

7. Amr ibn al-Aas over Amman

8. Uthman ibn Saeed the governor of Tayma.

Abu Bakr appointed Yazeed ibn Sufyan the governor of Syria. Then Umar made Muawiyah the governor of Syria after he died.

Many Shia, who due to their hatred for other daughters of the Prophet (saw) and because two of the daughters of the Prophet (saw) married Amir al-Muminin Othman (ra), totally deny their existence and claim the Prophet (saw) had only one daughter, Fatima (ra).

For full refutation and evidence from Quran and authentic Sunnah of the Prophet (saw) and from Shia sources that Prophet (saw) had four daughters and two of them married Othman (ra) read the following link: